Shade-mounting.



G. WRIGHT.

SHADE MOUNTING. APPUCATION FILED MAY 5. I915- Patented July 25, 1916.

I Inventor: Gilbert Wri ht,

His fittorney Q theatres.

at i Be it known that I, GILBERT WRIGHT, a

eia'rran er GILBEEUI WEIGHT, 015' SCHENECTADY, YORK, ASSIGNOB. T GENERALELECTRIC COMPANY, A CORPORATION OF NEW YORK.

' SHADE-Moonrise.

all whom it may concern:

.. citizen of the United States, residing at Schenectady, 1n thecountyofv Schenectady,

' and the like,

State of- New Yorkfhave invented certain new and useful Improvements inShade- Mountings,'of which the following is a specification; J, i U

My invention relates to shade mountings and it is concerned with themounting of reflectors-shades, globes, and

" other. inclosures used -with incandescent these portions 'theinvention extends and details as illustrated, yet'the'invention'lampsand the like, and more particularly with the attachment of holdersfor such inclosures to sockets and receptacles for such lamps. y

It is my aim to make the mounting simple, .secure,'convenient, andreliable in use, 'and easy and inexpentive to manufacture. 20 I Jventi'on herein illustrated and described is While the specificembodiment of the inthe best at present known to me, and while is notconfined to such details, but can be otherwise carried out and embodiedThe accompanying drawing is an elevation of a lamp socket with a shadeholder mounted and secured thereon in accordance with my invention,portions of the shade and the shade-holder being broken away andremoved.

ltwill be seen that the socket lshown comprises a sheet metal cap 2 anda sheet metalshell 3 of ordinary general form, these parts being securedtogether in any approved manner. The interior parts of the socket 1 arenot shown because the invention is not concerned with them; thev may beof any usual or' preferred construction. The upper portion of the socket1 is enlarged as usual as compared to the lower portion, of differentdiameter being united by a rounded shoulder 4. It will be observed,however, that the, shell 3 differs from those in common use in that itslOW6I" portion. is not annularly enlarged or beaded near the lampreceiving end, but instead has a screw thread 5 of about two turnsrolled in the portion that would ordinarily form the head. This chi-cade is shown as formed entirely by forcing the metal outward. The, thread5 1s aggregatg width of -t he screw about equal to that "of the usualhead, so that shade holders and'the like intended for to specificfeatures ordinary beaded sockets can alsobe secured to this threadedsocket l in the usual manwill be seen, is expanded-and flared at its VPatented July 25,1916. Application filed Hay 5, 1915. Serial No. 25,910.

lower end so as to fit within the shade neck 10, while the outer member8 is expanded so as to overlie the shade neck, and also flared so as toextend down over the bead and groove.' As shown, the correlativescrewthreads of the members 7 and 8 are on upwardly extending sleeveportions or. necks .11 and 12 of said members. When the members' 7 and 8are screwed together so as to grip the shade neck 10, their flangeportions 13 and 14: may abut as shown.

It will be seen that the. shade-holder 6 is internally threaded so as toscrew on the ex-' ternally threaded lower portion of the socket 1, andthat the sleeve or neck portion of one of its members incloses saidlower portion of the socket and abuts against its enlarged upper portionat the shoulder 4:; as shown, the socket-engaging threads are inside theneck 11 of the inner member 7, and it is the neck 12 of the outer member8 that abuts at the shoulder 4,

It will further be seen that the external and internal threads of theneck 11 of the inner member 7 are formed by helically corrugating saidneck (as by a rolling operation) and that the internal threads of theneck .12 of the outer member 8 are similarly formed,

but in such a way as to make the threaded portion of slightly lessgeneral diameter than the rest of the neck 12. The upper edge of easilyand rapidly produced by simple .dies

and by spinning and rolling operations.

When the holder 6 is beingscrewed on the socket 1, the tendency is totighten its grip on theshade 9, and the. harder it is screwed againstthe shoulder 4; the tighter the grip becomes.

What I claim as new and desire to secure I by Letters Patent of theUnited States, is v 1.- A shade-holder comprising a shade-en- 'ternallyscrew threaded lower portion and gaging member with-an upwardlyextending internally screw threaded neck and another shade-engagingmember having a neck externally screw-threaded so that it may screw intosaid first-mentioned member for the purpose of securing a shade intheholder,

and internally screwy-threaded so that it may screw on a socket.

2. A shade-holder comprising a shade-engaging member adapted to overliea shade neck and itself having an upwardly extend ing internallyscrew-threaded neck, and an-. other shade-engaging member adapted to fitwithin the shade neck and itself having an upwardly extending neckhelically. corru gated so as both to screw into said first-men-' 'tionedmember for the purpose of securing the shade in the holder and to'screwon a socket. v I

'3. A shade-holder for a socket with an externally screw-threaded lowerportion and i an enlarged upper portion, said shade-holder comprising ashade-engaging member adapted to overlie 'ashade neck and having aninternally screw-threaded portion, and another shade-engaging memberadapted to'fit within the shade'neck and having a-portion externallyscrew-threaded so that it may screw into said first-mentioned member forthe and internally threw-threaded so that itmay 'scre'w upon a socket,the screw-threaded portion of one of said members being in the form ofan upwardly extending neck adapted to .inclose the lower portion, of thesocket and abut against its enlarged upper portion.

4. A shade-holder for a socket with an exan enlarged upper portion, saidshade-holder comprising ashade-engaging member adapted to overlie ashade neck and itself-having an upwardly extending, internallyscrewthreaded neck, and another shade-engaging member adapted to fitwithin the shade neck and having an upwardly extending neck helicallcori'ugatediso as both to screw into the nec of said first-mentionedmember for the purpose ofsecuring the'shade in the holder and to screw'on. the lower portion of the socket, theneck of said first mentionedmember being adapted to inclose the lower portion of the socket and abutagainst its enlarged upper portion.

5. A shade-holder for-a socket with an externally screw-threaded'lowerportion and an enlarged upper portion, said shade-holder beinginternally screw-threaded so .as to screw on said lowerportion of thesocket and comprising a member having a shade engaging portion and anupwardly extending neck adapted to inclose said lower portion of saidsocket and abut against said en-- larged upper portion.

In Witness ,whereof- I have hereunto set my hand this. 30th day ofApril, 1915.

GILBERT WRIGHT.

